Add section breaks to a Scrivener project that will be recognised when compiled into a Word doc

I am using Scrivener to do the initial typesetting work on a large collection of poetry. I want to add a section break in each poem, immediately before the first line, so that when I compile the Scrivener project into a Word document those section breaks will be recognised by Word (this helps Word get its line numbering right). How can I do this in Scrivener? I don’t even see an option to add a section break.